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VARNEY & RIX

No. 61,286. Patented Jan. 15, 1867.

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THOMAS VARNEY' AND ALFRED RIX, OF SAN FRANCISCO, CALIFORNIA.

Letters Patent No. 61,286, dated January 15, 1867.

IMPROVEMENT IN QUARTZ CRUSIIBRS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that we, Anrnnn Rrx and TnoMAsVAnNnY, of the city and countyof San Francisco, and State of California, have invented certain new anduseful improvements in Stone and Quartz Rock Breakers; and we do herebydeclare that the following is a full, clear, and exact descriptionthereof, which will enable those skilled in the art to make and use thesame, reference being had to the accompanying drawings, forming a partof this specification,.in whichv Figure 1 is a longitudinal centralsection view of a rock-breaking machine having our improvements.

Figure 2 is a side view of the same. I

Figure 3 is a top View of the same.

Figure 4 is a rear view of the same.

Similar letters of reference in the difi'erent drawings indicate thesame. parts.

The principal feature of our' improvements consists in arranging old"and well-known parts so as to avoid the necessity of using the ordinaryheavy iron frame.

The machine is supported by the wooden frame A. Between the side pieces,of the frame is placed the station- I ary jaw B, supported by theflanges C resting upon and bolted to the frame, and also by the bracesD. These braces D, being projections from the stationary jaw, extend toa point beneath the crank-shaft and bear upward against the bottom ofthe journal boxesofthesamei The movable jawE is hinged to-the flanges Cby the joints F To hold the upper ends of the jaws in place and toreceive the strain while working, the wrought-iron bands G are placedaround the flanges C and joints F. To the crank H is suspended theconnectingvrod I, to the lower end of which is jointed the cross-head Jat its centre. Through each end of this cross head passes an end of thetoggle-binder This binder consists of aha-r of wrought iron extendingfrom one end of the cross-head forward to the back of the movable jaw,and turning thence atoright angles across the back of the jaw in asemitubular groove therein, and thence at right angles backward to theother end-of the cross-head where it is secured by a nut and screw, L,the other end of the binder being securedin like manner. Between thefixed jaw B and the cross-head J is the toggle-bar M, each end of itfitting into a semi-tubular groove. The rod connects the movable jaw tothe rubber spring O, by which, through the nut and screw R, the jaw canbe held back with any desired degree of pres sure. Iron plates P areplaced at-the sides of thejaws to'protect the wood of the frame and keepthe rock in place. The jaws arefurnished with hard iron dies Q withcorrugated faces fastened to the jaws by the bolts S, and so made as tobe turned end for end as wear may require.

The operation is as follows: The shaft being turned eitherway, thecross-head J and the adjacent end of the toggle-her M are carried up anddown. During the motion downward, as the joint at always works below theline drawn through the joints V and W, (the connecting-r0d being madelong enough to secure this result,)

the cross-head swings forward towafd the jaws, the spring 0 drawing itas well as the binder and movable jaw toward itself, by which thejointsat U, V, and W are kept tight and the jaws .made to open, between whichthe rock fall's. During the motion upward the toggle lever power isapplied to the jaws and the rock is crushed, as will plainly appear fromthe drawings. The distance between the jaws can be adjusted by the nutsand screws L. It will be observed that our arrangement of the severalold parts, to wit, the jaws, toggle-bar M, and binder K is such as toallow the ordinary heavy iron frame to be dispensed with. In othermachines the iron frame. receives theontward pressure of the lever, in"ours the outward pressure is received exclusively by the binder.

By thus getting rid of the iron frame much weight and expense are savedand the machine is rendered much more simple and accessible I I Having.thus described our invention, what we claim as new, and desire to secureby Letters Patent, is- The combined use of the wrought-iron binder K,the toggle-bar M, and jaws B and E, constructed and arrangedsubstantially in the manner and for the purposes set forth.

ALFRED RIX, THOMAS VARNEY.

Witnesses ALFRED Bansrow, Janus Bowman.

